I thought of a good use for notifications: Set up an alert system where you can say, "Give me an alert when there are 10 minutes to go till the bus arrives, after 3 PM", or "for every bus", etc. Then you could leave the site up in the background, and get toast notifications (and optionally a light sound) at the requested time. Maybe have a "recurring" option too, so e.g. if you miss the 10 minute one, you'll also get one at 9 minutes.

Does require stop order, predictions first though.